\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Main outcomes PCA calcul: Averaged z-score indices}
\begin{tabular}{l*{6}{c}}
\toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}\\
                    &\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Citizen\\monitoring\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Perceived\\citizen\\pressure\end{tabular}}}&\multicolumn{1}{c}{\textbf{Utilization}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Treatment\\quality\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Patient\\satisfaction\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Health\\outcomes\end{tabular}}}\\
\midrule
Full treatment      &      -0.026   &      -0.232   &       0.029   &       0.057   &       0.094***&      -0.011   \\
                    &     (0.032)   &     (0.150)   &     (0.031)   &     (0.037)   &     (0.033)   &     (0.031)   \\
Constant            &       0.013   &       0.102   &      -0.053** &      -0.030   &      -0.047*  &       0.011   \\
                    &     (0.022)   &     (0.099)   &     (0.022)   &     (0.029)   &     (0.025)   &     (0.024)   \\
\midrule
N                   &       7,288   &         187   &       7,288   &       7,288   &       7,288   &       4,212   \\
R$^{2}$             &       0.042   &       0.152   &       0.284   &       0.040   &       0.028   &       0.042   \\
\bottomrule
\end{tabular}
\end{table}
